//~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
// Copyright (C) 2009  Sebastian Mach (*1983)
// * mail: phresnel/at/gmail/dot/com
// * http://phresnel.org
// * http://picogen.org
//~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
// This program is free software: you can redistribute it and/or modify
// it under the terms of the GNU General Public License as published by
// the Free Software Foundation, either version 3 of the License, or
// (at your option) any later version.
//
// This program is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
// GNU General Public License for more details.
//
// You should have received a copy of the GNU General Public License
// along with this program.  If not, see <http://www.gnu.org/licenses/>.
//~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

#ifndef EDGEITEM_HH
#define EDGEITEM_HH


#include <QGraphicsLineItem>
#include <QGraphicsItemAnimation>
#include <QTimeLine>


class NodeItem;
class EdgeItem : public QGraphicsLineItem, QGraphicsItemAnimation {
public:
        EdgeItem (NodeItem *a, NodeItem *b);
        virtual ~EdgeItem();
        void paint (QPainter *painter,
                    const QStyleOptionGraphicsItem *option,
                    QWidget *widget);
        void startAnimation();
        void update();

        bool isConnectedTo (NodeItem *a) const ;

private:
        void afterAnimationStep (qreal step);

        NodeItem *itemA, *itemB;
        QTimeLine timer;
};



#endif // EDGEITEM_HH
